Re: [Mip4] Query For error code from HA ..
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Re: [Mip4] Query For error code from HA ..

Title: Message
Hi arun,
  For further understanding your problem can you please clarify the following:
  Is the CoA address of the FA (in case registration is being done via FA) or that MN (co-located CoA)?
 
Regards
Radhakrishnan
----- Original Message -----
From: Arun H S
Sent: Tuesday, March 01, 2005 11:18 AM
Subject: RE: [Mip4] Query For error code from HA ..

Hi,
 
Sorry, I guess the problem was not understood properly.
 
 
    The problem in question is as follows:
 
    __________                         ____________
    |                | HA1                  |                    |
    |    HA        | ============|        FA        |
    |                |                 FA1  |                    |
    -----------------                         ----------------------
                                                        ||   COA
                                                        ||
                                                        ||
                                                ___________
                                                |                  |
                                                |        MN     |
                                                |                  |
                                                --------------------
 
Now when MN sends an RRQ with Care-of-Address as COA, to Home-Agent Address, HA1, the Registration is successful because the IP addresses HA1 and FA1 are routable. However, since the tunnel that is created is between the IP addresses HA1 and COA, at the Home Agent, there may not be any route in HA for the IP Address COA.
In such a scenario, what type of error-code should the Home Agent send back to the Mobile Node.
 
PS: In such a scenario, the Registration will be successful, however the packet forwarding to the Mobile Node will fail since there is no route to the COA at the Home Agent.
 
Regards,
Arun
 
 
-----Original Message-----
From: mip4-bounces at ietf.org [mailto:mip4-bounces at ietf.org] On Behalf Of Radhakrishnan Suryanarayanan
Sent: Friday, February 25, 2005 05:52 PM
To: keshavak at huawei.com; mip4 at ietf.org
Subject: Re: [Mip4] Query For error code from HA ..

Hi Mr.Keshav,
If you are talking about Registration reply, HA will recv ICMP Destination unreachable (from intermediate routers) for CoA of MN.
Where is the question of HA sending any error msg to MN if MN's CoA in unreachable?????
 
Regards
Radhakrishnan
----- Original Message -----
From: keshav
Sent: Friday, February 25, 2005 5:32 PM
Subject: [Mip4] Query For error code from HA ..

Hi,

            I would like to know is there any error code that HA has to send to MN if the

            Care of address of the MN is not reachable during registration?

           

           

 

 

           

Thanks & regards,

Keshava

 

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